Finding the Fourth Proportional to 305,134,565.76, 421,080,739.92 and 165,908,833.56
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Solution
The fourth proportional to 305,134,565.76, 421,080,739.92 and 165,908,833.56 is: 228,951,492.99
Step by Step Solution
- Step 1: Write the proportion equation
305,134,565.76 : 421,080,739.92 = 165,908,833.56 : x - Step 2: Convert to fraction form
305,134,565.76/421,080,739.92 = 165,908,833.56/x - Step 3: Cross multiply
305,134,565.76x = 421,080,739.92 × 165,908,833.56 - Step 4: Simplify right side
305,134,565.76x = 69,861,014,394,708,928 - Step 5: Solve for x
x = 69,861,014,394,708,928/305,134,565.76 - Step 6: Final answer
x = 228,951,492.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.